Palladium nanoparticles decorated into a biguanidine modified-KIT-5 mesoporous structure: a recoverable nanocatalyst for ultrasound-assisted Suzuki–Miyaura cross-coupling,RSC Advances

当前位置： X-MOL 学术 › RSC Adv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Palladium nanoparticles decorated into a biguanidine modified-KIT-5 mesoporous structure: a recoverable nanocatalyst for ultrasound-assisted Suzuki–Miyaura cross-coupling
RSC Advances ( IF 3.9 ) Pub Date : 2019-12-16 , DOI: 10.1039/c9ra08809a
Hojat Veisi ₁ , Amin Mirzaei ₁ , Pourya Mohammadi ₁

Affiliation

In the current research work, a new KIT-5-biguanidine-Pd(0) catalyst was prepared and applied to ultrasound-assisted Suzuki–Miyaura cross-coupling reactions using ultrasound waves at ambient temperature. The ultrasound-assisted method is a green and efficient method for C–C coupling. Many parameters of the Suzuki coupling reaction were examined, such as the irradiation time, the types of organic and inorganic bases, the types of aprotic and protic solvents, and the dosage (mol%) of catalyst. Also, the results showed that the yields from the ultrasound-assisted coupling reactions were higher than from non-irradiated reactions. The prepared catalyst was characterized via HR-TEM, SEM-EDX-mapping, FT-IR, ICP-AAS, BET-BJH, and XRD studies. The stability and catalytic performance of the prepared catalyst were good, and it could be reused 6 times without catalytic activity loss for the Suzuki–Miyaura cross-coupling reaction.

中文翻译：

钯纳米粒子修饰成双胍修饰的 KIT-5 介孔结构：用于超声辅助 Suzuki-Miyaura 交叉耦合的可回收纳米催化剂

在目前的研究工作中，制备了一种新型 KIT-5-双胍-Pd(0) 催化剂，并将其应用于环境温度下的超声波辅助 Suzuki-Miyaura 交叉偶联反应。超声辅助方法是一种绿色、高效的 C-C 耦合方法。考察了 Suzuki 偶联反应的许多参数，例如辐照时间、有机和无机碱的类型、非质子和质子溶剂的类型以及催化剂的用量 (mol%)。此外，结果表明，超声辅助偶联反应的产率高于非辐照反应。制备的催化剂通过以下表征HR-TEM、SEM-EDX 映射、FT-IR、ICP-AAS、BET-BJH 和 XRD 研究。制备的催化剂稳定性和催化性能良好，可重复使用6次，Suzuki-Miyaura交叉偶联反应催化活性不损失。

更新日期：2019-12-17

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南